My synology unit (1819+) has treated me pretty well. If you are looking to spend less then something comprable, at least look for a synology unit with a PCI-e expansion slot and maybe 4-6 drive bays. You can access via Synlogy Drive app remotely via windows or your phone, administer their control panel remotely, use as a robust local asset\project server, etc. That would be my advice. And unlike QNap it hasn't been hacked recently.
I've used my PCI-e expansion slot to get their combo card that gives you both m.2 drives for burst writing and 10gbe ethernet. Pretty sweet setup at the end of the day.